How to find the thermostat on a jaguar s-type

If you are trying to locat the thermostat then follow the instructions after this warning.
This isnt an easy job to do and its not a quick job to do technically its not that hard to do its just that getting to all the parts to undo them is difficult and time consuming so you have been warned

The thermostat is located just behind the top of the radiator, a hose runs from left to right. This hose is also just below the air filter box and the battery box and therefore difficult to see. Just about at the right end of the air filter box the hose has a hard plastic T pipe that branches off in a downward direction. At the lower end of this you'll find the thermostat mounted on a triangular flange and held in place with 3 bolts. The output of this then transitions into about 4" length of hose again before transitioning to an matal pipe that is kind of J shaped. The lower 4" section of hose is held in place by two spring clips, these are a pain to get to by the way. I found it easiest to remove the hose from the thermostat with it still bolted in place, similarly I bolted the new thermostat in place before replacing the hose. This way you have something relatively solid to pull or push the hose against. With that said the J pipe is also a tight fit in the space so none of this is easy to get to, it doesn't help that there is some kind of sensor mounted on the engine just adjacent to the J pipe.